Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Determine the value of the expression by substituting the variable value |
Grade: 8-a Lesson: S1-L8 |
Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
1. Determine the value of expression \$2 + 3b + 4b^2\$ when b = 2.
Step 1a
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The given expression is, \$2 + 3b + 4b^2\$. |
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Explanation:
The given expression is, \$2 + 3b + 4b^2\$. The expression contains variable in 'b'. |
Step 1b
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Substitute the values of the variables in the expression. |
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Explanation:
Substitute the values of the variables and perform operations. Perform operations according to PEMDAS rule. ⇒ \$2 + 3b + 4b^2 \$ ⇒ \$2 + 3(2) + 4(2)^2 \$ ⇒ \$2 + 3(2) + 4(4)\$ ⇒ \$2 + 6 + 16 \$ ⇒ \$24\$ |
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